Thomas william helliwell



(N0 Model.)

T. W. HBLLIWELL.

GLAZING BAR.

No. 439,066. Patented Oct. 21, 1890.

WITNESSES: 11v VENTOR I BY W ATTORNEY UNITED STATES PATENT OFFICE.

THOMAS \VILLIAM HELLIIVELL, OF BRIGHOUSE, ENGLAND.

GLAZlNG-BAR.

SPECIFICATION forming part of Letters Patent No. 439,066, dated October21, 1890. Application filed February 7, 1890. Serial No. 339,772. (Nomodel.) Patented in England May 2, 1888, No. 6,548.

To all whom it may concern:

Be it known that I, THOMAS W. HELLIWELL, a subject of the Queen of GreatBritain, residing at Brighouse, in the county of York, England, haveinvented a certain new and useful Glazing-Bar, of which the following isa specification.

The invention herein described was patented in England by me on the 2dday of May, 1888, No. 6,548.

The invention consists of a combined supporting-bar and cap-stripinseparable from each other and of peculiar construction, to be employedfor supporting the edges of sheets of glass, slate, or other material inthe construction of greenhouses, skylights, and the roofs and sides ofbuildings generally, or for any other suitable purpose.

In other United States patents granted to me, notably Patents No.284,421 of September 4, 1883, and No. 355,079 of December 28, 1886, Ihave described glazing-bars formed of two or more pieces, usually asupporting-strip, upon which the sheets rest, and a cap-strip secured tothe supporting-strip by bolts or otherwise in. such a manner as to shedrain from the joint, and at the same time secure the sheets in place byresting upon their upper surfaces. The present invention differs fromthese constructions in that the supporting and cap strips are made in asingle structure, thereby dispensing with the use of bolts.

In carrying out my invention I make by any convenient means a bar havingsupporting parts to receive the edges of the sheets of glass or othermaterial, the bar also being formed on each side with two or morechannels or gutters to convey away rain or condensed vapor, saidsupporting-bar being also made with an overhanging cap, thc edges ofwhich cap rest upon the upper surface of the sheets of glass, for thepurpose of preventing the glass from lifting out of its position and forprotecting the joint.

Referring to the accompanying drawings, Figure 1 isaperspective view ofmy combined glazing-bar and cap with the sheets of glass in position.Fig. 2 is an enlarged transverse section of the bar, and Fig. 3 is asimilar section showing a slight modification in the construction of thebar.

a represents the glazing-bar entire. It consists of sheet metal or othersuitable material, made in the form shown. It is formed on each sidewith two channels or gutters b and c. The outer lips of the channels I)serve as the resting-points for the edges of the sheets of glass orsimilar material d, which the bar supports. These channels collect andcarry off rain-water and waters of condensation. The outer part of thebar or the cap consists of two overhanging ledges e e. These are locateddirectly above the channels I) b, and their lower sides bear with ayielding pressure upon the upper surface of the glass plate. Theelasticity of the cap permits it to adjust itself to the glass and toallow for slight inaccuracies of construction, and so forth. This cap isformed in one piece with the other portion of the bar, and the sheets ofmaterial which the bars are designed to support are inserted between theedges of the cap and the lips of the gutters b b.

Although I have shown and described the cap and bar as being formed,preferably, from one piece of metal, it is evident that the uppercovering of the cap may be formed separately from the bar and attachedas shown in Fig. 3, or by any other suitable means, and still derive allthe benefits of a bar made in asingle piece. The separate cap-strip,however, is to be made irremovable from the supporting-strip.

In the form shown in Figs. 1 and 2 the sheet of metal is bent at oneedge to form one channel or gutter c, then upward a short distance, theninward and downward, and again upward to form a second channel or gutterb above the gutter 0, having a lip or shoulder f to support a plate d.The sheet is then bent out ward and downward to form an elasticoverhanging ledge e to press on the upper surface of the plate d, and isthen bent or doubled back upon itself, and continuing, forms an arch orcap 9 of but a single thickness, and is then bent into form on the otherside like that just described. This construction not only permits of thedispensing with bolts, but it renders the building of aroof simpler thanwhen a separable cap is employed, and also leaves no parts to work looseand rattle.

The form shown in Fig. 3 is the same as that shown in Figs. 1 and 2,with the exception that the top plate is made separately from the sidesbut has its edges bent over upon to firmly and permanently hold theupper outer edges of the side pieces. In both forms the cap isinseparable from the sides and has but asingle thickness at the center,while the wings or ledges e e are of double thickness where they pressupon the panes of glass.

Having thus described my invention, I claim As an article ofmanufacture, a glazing-bar consisting of two side strips, each havingtwo gutters or channels one above the other, and a cap-strip permanentlyuniting the two side strips, said cap-strip having a single thick-THOMAS WILLIAM HELLIWELL.

Witnesses:

DAVID J. BAILEY,

Solicitor, Huddersfieldv ERNEST L. VARKIN,

His clerk.

